Subject: Chemistry — Stoichiometry
Question: The stoichiometric reaction of 516 g of
dimethyldichlorosilane with water results in a tetrameric cyclic product
X in 75% yield. The weight (in g) of X obtained is \_\_\_\_\_\_\_\_.
\[Use, molar mass
$\left( g\ mol^{- 1} \right):H = 1,\ C = 12,O = 16,Si = 28,Cl = 35.5$\]
Answer: (222)
Solution: [IMAGE] $$\left( CH_{3} \right)_{2}SiCl_{2} = \frac{516}{129} = 4\ mol$$
On Applying POAC on Si
$$1 \times n_{\left( CH_{3} \right)_{2}SiCl_{2}} = 4 \times n_{tetramer}\ \ $$
$$n_{tetramer} = 1\ mol$$
$$\downarrow \times 296\frac{g}{mol}$$
$$296g$$
$$296 \times \frac{75}{100} = 222\ g$$